Common Roof Issues from Inadequate Flashing Around Skylights
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Inadequate Flashing Around Skylights
Skylights can beautify or illuminate your home or commercial building. However, you may face frequent roofing problems, specifically when not adequately protected by roof flashing. Inadequate flashing around skylights is one of the most common issues that cause water to leak from your roof. This problem often arises due to improper installation of damaged flashing. Reading the guide below helps you understand the roof issue, how poor flashing leads to roof leaks, and how to avoid further damage to the entire roof structure.
Role of Flashing Around Skylights
Flashing plays a significant role in separating the roofing features and the roof's surface. It is designed in a way that directs water not to go to the joints where you have installed other roof materials or features like chimneys, skylights, or vent pipes.
Skylights are vulnerable to the sloped roof's edge and vertical surfaces. Properly installed roofing flashing can prevent the standing water from entering your building, which can lead to water damage or even structural damage.
How Inadequate Flashing Triggers Roof Leaks
A homeowner may face a roof leak if the roof installed around the skylight does not have proper flashing protection. At first glance, this starts from single drops of rain. Over time, it becomes rot, mold growth, and damage to your ceilings. Indeed, if this roof problem is not addressed on time, you end up disturbing your internal temperature, which results in expensive roof repair.
Poor installation also makes this situation worse. Multiple contractors can make this mistake and use roofing cement instead of real flashing pieces. After some time, you may face sealant cracks, but they can easily be protected using proper flashing installation, such as step flashing, base flashing, or counter flashing.
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The Consequences of Neglecting Skylight Flashing
Ignoring the signs of a leaking roof can be dangerous. One of the initial warning signs is damaged shingles, which can curl or split around the skylight. Once the shingles are affected, you can experience a confirmed roof leak.
Most homes are built with flat roofs, which makes draining water from the roof difficult. Without proper kickout flashing or a proper drip edge, rain water can easily seep into the framing. This leads to further damage, such as:
- Structural damage
- Rotting roof decks
- Mold infestation
- Reduce the roof's lifespan
- Interior ceiling or wall collapse
In commercial areas, a leaking cab can cause serious problems for your equipment. You must install flashing at a right angle to prevent continuous roofing problems that lead to costly repairs.
Flashing Types Used Around Skylights
Installing specific flashing pieces with quality roofing material is essential for roof protection. Here are a few roof flashing types to follow:
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Step Flashing
Many homeowners mostly use step flashing around a skylight. This flashing has L-shaped pieces of metal between each course of shingles. The pieces are installed so water flows perfectly from the roof, preventing seepage.
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Base Flashing
Base flashing is installed under the skylight, which handles the runoff directly. Indeed, this type of flashing protects your roof against standing water.
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Counter Flashing
Counter flashing is installed above the base flashing or vertical surface. It is designed to protect the flashing underneath, preventing it from being lifted by strong winds. This type provides a complete seal because it works with apron flashing and step flashing.
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Kickout Flashing
This special type of flashing helps direct water away from walls or roof edges. Water can reach behind siding without proper installation, causing mold and rot.
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Continuous Flashing
Continuous flashing is used for the entire length of the joint. However, it may not be a good choice due to roof shrinkage or high winds. In that case, you require multiple pieces of step flashing for flexibility.

How to Select the Right Flashing Material
All roof flashing materials have different properties and benefits. This material selection depends on your budget, climate, and roof design.
Copper Roof Flashing
The most recommended and durable option is copper roof flashing due to its high corrosion resistance, which extends the roof's lifespan. It is often used in multiple homes and buildings that have a cooper roof style.
Aluminium Flashing
One of the lightweight, budget-friendly, and easy-to-cut with tin snips is aluminum flashing. It is primarily used in residential areas and must be separated from dissimilar metals to protect against galvanic corrosion.
Galvanized Steel
If you opt for a durable and cost-effective material, you should prefer galvanized steel. It provides strong resistance against weather conditions. Most importantly, you must perform regular inspections for expert roofing repairs to protect the zinc layer.
Preventive Measures and Long-Term Maintenance
Fixing damaged flashing is undoubtedly essential. There is also a need to take preventive measures. So you need to perform:
- Schedule regular inspections at least twice a year.
- Clear clogged gutters regularly.
- Proper inspection is required for vent pipes, plumbing vent, and flashing points for wear.
- Identify signs of shingles after storms.
- Check ice dams in winter, which can force water under the flashing.
- Monitor clear signs like mold near the skylight.
You must have a certified roofing contractor to maintain your skylight flashing and protect your roof from standing water.
The Professional Approach to Repair Roofing Problems
Skylights make your room look attractive, but when your roof flashing is compromised, you face severe roofing problems. Poor installation or incorrect roof flashing can jeopardize your entire roofing cost, leading to a leaking roof or compromising your shingles.
In case of damage flashing, the most optimal solution is to repair roof flashing with modern tools and techniques. To address this roofing problem, consult professional roofers to ensure all roof sections are properly maintained and awkward areas sealed.
To fix inadequate flashing around skylights, you need to trust your local roofing experts. So they can perform proper installation using high-quality roof flashing materials.
Call LOA Construction at 855-661-3431 to schedule your free inspection today!